arm: Remove 32bit KVM host support

That's it. Remove all references to KVM itself, and document
that although it is no more, the ABI between SVC and HYP still
exists.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>

1 files changed, 0 insertions, 86 deletions

diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c
deleted file mode 100644
index eb4174f6ebbd..000000000000
--- a/arch/arm/kvm/reset.c
+++ /dev/null
@@ -1,86 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Author: Christoffer Dall <c.dall@virtualopensystems.com>
- */
-#include <linux/compiler.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kvm_host.h>
-#include <linux/kvm.h>
-
-#include <asm/unified.h>
-#include <asm/ptrace.h>
-#include <asm/cputype.h>
-#include <asm/kvm_arm.h>
-#include <asm/kvm_coproc.h>
-#include <asm/kvm_emulate.h>
-
-#include <kvm/arm_arch_timer.h>
-
-/******************************************************************************
- * Cortex-A15 and Cortex-A7 Reset Values
- */
-
-static struct kvm_regs cortexa_regs_reset = {
-	.usr_regs.ARM_cpsr = SVC_MODE | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT,
-};
-
-
-/*******************************************************************************
- * Exported reset function
- */
-
-/**
- * kvm_reset_vcpu - sets core registers and cp15 registers to reset value
- * @vcpu: The VCPU pointer
- *
- * This function finds the right table above and sets the registers on the
- * virtual CPU struct to their architecturally defined reset values.
- */
-int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
-{
-	struct kvm_regs *reset_regs;
-
-	switch (vcpu->arch.target) {
-	case KVM_ARM_TARGET_CORTEX_A7:
-	case KVM_ARM_TARGET_CORTEX_A15:
-		reset_regs = &cortexa_regs_reset;
-		vcpu->arch.midr = read_cpuid_id();
-		break;
-	default:
-		return -ENODEV;
-	}
-
-	/* Reset core registers */
-	memcpy(&vcpu->arch.ctxt.gp_regs, reset_regs, sizeof(vcpu->arch.ctxt.gp_regs));
-
-	/* Reset CP15 registers */
-	kvm_reset_coprocs(vcpu);
-
-	/*
-	 * Additional reset state handling that PSCI may have imposed on us.
-	 * Must be done after all the sys_reg reset.
-	 */
-	if (READ_ONCE(vcpu->arch.reset_state.reset)) {
-		unsigned long target_pc = vcpu->arch.reset_state.pc;
-
-		/* Gracefully handle Thumb2 entry point */
-		if (target_pc & 1) {
-			target_pc &= ~1UL;
-			vcpu_set_thumb(vcpu);
-		}
-
-		/* Propagate caller endianness */
-		if (vcpu->arch.reset_state.be)
-			kvm_vcpu_set_be(vcpu);
-
-		*vcpu_pc(vcpu) = target_pc;
-		vcpu_set_reg(vcpu, 0, vcpu->arch.reset_state.r0);
-
-		vcpu->arch.reset_state.reset = false;
-	}
-
-	/* Reset arch_timer context */
-	return kvm_timer_vcpu_reset(vcpu);
-}